Unselected
close up of bike chain

Know When to Change Your Bike Chain

When to change a bike chain: Our Guide to how and when to replace a chain.

Unselected

The chain of your bike is a fundamental part that should be taken care of and knowing how to detect an upcoming failure is important. Good maintenance and proper diagnosis will allow you to ride with peace of mind.

Unselected
someone holding up a bike chain

1. How Many Kilometres Can One Ride With Their Bike Chain?

The lifespan of a bike chain can vary depending on several factors, such as the quality of the chain, maintenance, riding conditions, and personal riding habits. On average, a well-maintained bike chain can last anywhere from 3,000 to 5,000 kilometres (approximately 1,800 to 3,100 miles). However, depending on the aforementioned factors, some chains may wear out sooner or last longer. Regular cleaning, lubrication, and proper tension adjustments  can help extend the life of a bike chain.

Unselected

2. Wear Parameters

Let's be clear, the wear of a chain depends on how you treat it. Here are several parameters that affect its wear:

  • Transmission adjustment
If you are gentle with your gear changes and adjust your transmission correctly, you can extend the lifespan of your chain. Otherwise, you will need to change it more prematurely
  • Chain cross-chaining
The more you cross the chain, the more you wear it out. Cross-chaining occurs when you use the smallest sprocket with the small chainring and vice versa, the large sprocket with the large chainring. It is better to use the gear combination that keeps the chain as straight as possible.
  • Your practice
A chain is more stressed in mountain biking than on the road. However, it is also more stressed during strength sessions than during endurance sessions.
  • The quality of your equipment
A higher-quality derailleur or a high-end chain extends their longevity.
  • The maintenance you provide
This is probably the most obvious parameter. A chain suffers from friction, and a lack of lubrication or prolonged exposure to moisture damages it.

Unselected
Man using a chain wear tester on a bike chain

3. How To Tell If Your Chain Is Worn Or Damaged

Some signs that should alert you:

If the gears shift poorly, this could be a warning sign. However, be cautious, as it could also be due to an adjustment or a loose cable.

A chain that skips without having engaged the gear levers or without changing the chainring is a sign of wear (sprockets, chainrings, and chain should then be examined).

Note: squeaking or squealing is not a sign of wear but is more likely related to a lack of lubrication. Resolve this issue promptly to relieve your transmission.

The "By Touch" Technique
You can determine if the chain is worn using a very simple test. Put it on the largest chainring. At the point where it is in full contact with the chainring, pull it towards you... If it completely detaches from the chainring, it needs to be replaced. 

Our tip: over time, the chain does not lengthen; however, the retaining pins and links wear out and loosen. There is a very simple and economical tool that allows you to reliably and quickly determine if your chain is worn: the wear indicator. 

It is an essential tool to have in your toolbox. If it sinks between the sprockets, you need to replace your chain. Otherwise, you can still wait.

The chain is an element that is replaced, just like brake pads, tyres, or cables. 
If you postpone its replacement, the other elements of your transmission wear out prematurely. So, do not hesitate to change it regularly to preserve your cassette and maintain a comfortable practice during your rides!

Unselected

4. How To Change Your Bike Chain

Here's a step-by-step guide on how to change your bike chain:

Gather Tools: You'll need 

  • a chain breaker tool 
  • a new bike chain that matches your bike's speed (e.g., 10-speed, 11-speed) 
  • and possibly a master link or connecting pin, depending on the type of chain you have.
Prepare the Bike: Shift your bike into the smallest chain ring in the front and the smallest cog in the rear. This will create slack in the chain, making it easier to remove.

Remove the Old Chain: If your chain has a master link, locate it and use the chain breaker tool to push the pins out of it, separating the chain. If your chain doesn't have a master link, you'll need to use the chain breaker to push out one of the pins.

Size the New Chain: Lay the old chain next to the new one and match the lengths. Using the chain breaker tool, you may need to remove excess links from the new chain. Be sure to leave enough extra links for proper tension.

Install the New Chain: Begin by threading the new chain through the rear derailleur, ensuring it passes through all the pulleys. Then, loop the chain around the smallest chain ring in the front and the smallest cog in the rear.

Connect the Chain: If your new chain has a master link, install it according to the manufacturer's instructions. If not, use the chain breaker tool to press the pin back into place. Be careful not to push it too far, as this can cause the chain to bind.

Check Tension: Shift through the gears to ensure the chain moves smoothly across the cassette and chainrings. The chain should have a slight amount of slack but not be too loose. Adjust the tension if necessary by moving the rear wheel in the dropouts.

Final Check: Double-check that the chain is properly routed through the derailleur and that all connections are secure. Spin the pedals to ensure everything is functioning smoothly.

Lubricate: Once you're satisfied with the installation, apply lubricant to the new chain, focusing on each link. Wipe off any excess lubricant with a clean rag.

Test Ride: Take your bike for a short test ride to ensure everything works correctly. Pay attention to how the chain shifts through the gears and whether there are any unusual noises or issues.

That's it! With these steps, you should be able to replace your bike chain successfully. If you're unsure about any part of the process, don't hesitate to consult a bike mechanic or refer to manufacturer guidelines for your specific bike and chain type.

Unselected

Read Next

Man undoing a bike chain with chain break tool

A Buyer's Guide to Choosing the Right Bike Chain

Choosing a fitting quality bike chain is vital to guarantee a smooth and positive transmission. Find out what to look out for.

Van Rysel road bike on a downhill

How to Choose a Road Bike

Feel like you aren’t riding right? We give you the lowdown on what system works best for your cycling style.

Man fixing a bike

What’s Covered in a Bike Fitting?

Getting the right bike fitting will improve your cycling performance and spare you from injury, keeping you comfortable for longer. Find out more.